2018 Audi A6 Saloon 3.0 TDI V6 S Line

Overview

• Make: Audi
• Model: A6 Saloon
• Trim: S Line
• Version: 3.0 TDI V6 50 S Line Tiptronic 4WD Euro 6 (s/s) 4dr (282 bhp)
• Year: 2018
• Mileage: 80,253 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 282 bhp
• Gearbox: Automatic (Tiptronic)
• Drive: Four-wheel drive
• Colour: Black
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A6 Saloon S Line is advertised with 80,253 miles, approximately 10,800 above the typical mileage for its age. Priced at £17,498, it is advertised £390 above the AskCar estimate of £17,108. The AskCar estimate uses 858 UK dealer adverts for the Audi A6 Saloon, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 37 days ago, and its asking price has since fallen by £500. Its advertised mileage matches the government's MOT record. The seller is Arnold Clark Ayr Kia, based in AYR. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £390 (2%) over the AskCar estimate of £17,108.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 858 priced Audi A6 Saloon adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi A6 Saloon with the 3.0 diesel engine is typically advertised at £17,500: the median of the 13 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Audi A6 Saloon has been on sale for at least 37 days.

Price history

AskCar first saw this advert on 26 September 2026 at £17,998. Its asking price is now £17,498, £500 less. The latest price cut was seen on 28 October 2026.

Price changes recorded:

• 26 September 2026: £17,998
• 28 October 2026: £17,498

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 23 September 2027.

It has had 9 MOTs. The latest, on 24 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 80,268 miles, which matches the advertised 80,253 miles.

Advertised mileage is about 10,800 miles higher than the median mileage of a 2018 Audi A6 Saloon on AskCar.

Similar cars

10 other 2018 Audi A6 Saloon S Line 3.0 diesel automatic saloons are for sale at UK dealers, from £11,490 to £21,998, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, grey. Mileage: 76,315 miles. Price: £16,945, £553 less than this car. Dealer: Junction 17 Cars Limited t/a Junction 17 Cars (Grantham) in Grantham. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-41c7d85f2e86
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 74,434 miles. Price: £18,999, £1,501 more than this car. Dealer: Webuycarsformore.com in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-ae5dc8b2fffe
• 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, black. Mileage: 91,370 miles. Price: £15,690, £1,808 less than this car. Dealer: SR Motors in Swindon. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-1264248cfbfe

• The nearest: 2018 Audi A6 Saloon S Line, 3.0 diesel saloon, white, 26 miles from this car. Mileage: 34,714 miles. Price: £21,998, £4,500 more than this car. Dealer: Arnold Clark Linwood Volkswagen in Linwood. AskCar page: https://askcar.co.uk/car/audi-a6-saloon-2018-eab7aca38717